Automatic radiating system for internal-combustion engines.



E. A. SAYRE.

AUTOMATIC RADIATING SYSTEM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JAN-31.1912.

Patented July 21, 1914.

INVENTOR [bar/v5 /7 J/W/PE.

WITNESSES A TTORNEYS To aZZ whom it may concern p I Beit known that I, EUGENE A. SAY i. citizen of the United States, and a resi- "dcnt of lllgin, in the county of' Kane and Late of Illinois, have made certain new and useful Improvements in Au omatic Radiating Systems for lnternal-Comhustion Englues, of which the following is a specification.

My invention relates to improvements in tllltolnfltll' radiating systems for internal combustion engines, and it consists in the combinations, constructions and arrange- I 'ments herein descril'ied and claimed.

' It is a well known fact that an internal combustion engine operates more efiiciently ifitheparts are heated to a certain teinper- I ature, than it does it these same parts are cold. on the other hand. the parts may be heated to such a temperature as to result in I injury to thefengine. The ordinary teins of cooling radiation. in which water circulation is used, employ means for foreing the water into contact with the cylinder of the engine, andthence through a radiator, returning the cooled water to the engine,

{and thus completing the cycle. In those ,forms in common use the movement of the water from the liez1t ul,,.cylin(ler to the radiator begins at the first stroke ofthe en- 'gine, and the conschuence is that the cold water flowing in around the cylinder keeps the temperature of the engine down below ,that at which it works most etliciently. After the engine has run for awhile it will gradually heat up and thus it is that an engine, for instance in an automobile, will ,work better after being run for some time than it will at first. v

An object of my invention is to provide a Ill 7 engine may be retained until it has reached isuch a degree as to insure its most efficient 7' working,[after which a circulation of Water or of other cooling, medium is automatically started thrbugh the radiator, thereby tending to keep the engine from overheating.

further object of my invention is to provide a system ofithe type described in which the water may hecirculaterl either Ythrou'gh the radiator or through a bV-pass,

the eilect of the. circulation through the bypass being to conserve the heat so as to an Specification of Letters Patent.

I radiating system in which the heat of the GFFIQE.

EUGENE A. SAYRE, F ELGIN, ILLINOIS.

J V AUTOMATIC RADIATING SYSTEM FOR INTERNAL-CQMBUSTION ENGINES.

Patented July 1914.

Aflplication filed January 31. .912. Serial No. 674,2L'51.

able the engine to quickly attain the temperature of its maximum ethciency.

A further object of my invention is to provide thermostatic means for operating valves to control the flow of water either through the radiator or through the by-nass. Other objects and advantages will appear n the following specification. and the novel features of the invention will be particulerly pointed out in the aopended claims.

invention is illustrated in the accompanying drawings forming part of this application. in which Figure 1 is a side view showing an engine, a radiator, and thermostatic means for controlling the flow of the cooling fluid, and Fig. 2 a plan view of the float-tank.

Referring now particularly to Fi i 1, I have, shown therein. diagrammatii'al-ly, an internal combustion engine 1 of any suitable type. u-orided with a main shaft .2 having a fly wheel 3 at one end and provided at the other end with a sprocket wheel 4, which is connected by a sprocket chain 5 with a sprocket (3 on a stub-shaft 7. The latter is directly connected with a pump 8. At 9, I have shown a water jacket which is connected by a pipe with the pump 8. An extension 9 of the water jacket communicates by a. pipe 11 with a float chamber 12. having a cook 13 at its top. Within the float chamber is an air tilled float 14 having a stem 15 slidingly disposed in guides 16. Secured to the stem is a weight 17, onone side. and an arm 18 hearing a slide ral e or gate 19 arranged to open or close the ends of a pair of pipes 20 and 21. The pipe'QO leads to the top of theradiator S22 and the pipe 21 connects with a pipe 23 leading from the bottom of the radiator directly to the pump 8.

At 24 is a condenser having a cock 25 at its top. One end of this condenser commnnicates with the interior of the float chamber 12 at 26. while the other end con- .nects with the pipe 11 at 27.

denser 24 and the chamber and condenser are completely filled with the liquid. Care is taken to supply enough liquid to com pletely fill the radiator and the waterjacket. This is accomplished through the cap 22. As the radiator is filled the float 14 rises and the valve 19 is brought into position so as to cut off the fiow through the pipe 20. When the engine is started the pump 8 will begin to work, and will cause a circulation of the water through the pipe 10, through the water jacket 9, and its extension 9, the float chamber 12, and by means of the by pass and pipe 23 back to the-pum 8. It will thus be seen that this initial ow does not pass through the radiator. The consequence is, that, as the engine continues to run, the water becomes heated to its boiling point.

On reaching its boiling point the vapor will begin to enter the float chamber, and as itdoes so it collects at the top and red ually forces the float l4 downwardly, t ereby tending to uncover the pipe 20 and to close the pipe 21. Theuncovering of the pipe 20 permits part of the fluid to flow around through the radiator. If the generating of steam is fast, in other words if the heat of the engine is increasing, the float will be pushed down farther, and more of the liquid will be forced around through the radiator.- A point will be reached where the.

radiation will approximately balance ,the

generation of steam, and at this pointthe float will remain stationary; Iftheload onthe engine increases and the temperature rises, the float will be pushed farther down while on the contraryif the amount of cool water su v plied to the water jacket is in excess of t e amount required, then the temperature will fall and the steam in the top of the water jacket 12 will condense, thereby permitting the float to rise. A part of the fluid will now be turned around through the by-pass 21 and shutoff from the radiator 20.

It will thus be seen that the device is antomatic, and is controlled by the vapor of the cooling medium.

In case the production of the vapor should be too fast the condenser 24 comes into play..

This condenser is designed to he filled with the cooling fluid when the radiator is being filled, the cook 25 being opened for that purpose and closed after the condenser is filled. As long as the liquid in the float chamber keeps above the opening 26 the condenser is idle, but when steam begins to enter at the opening 26, the cool liquid in the condenser.

is forced from the condenser through the opening 27 into the pipe 11 where it meets the incoming steam and tends to condense it.

It will be seen that I have provided a cooling system by means of which the initial heat of the engine is saved in order to enable it to at once attain its maximum efii-- ciency. This heat is otherwise lost and'more: fuel is needed in a device which does not automatically regulate the flow of thecool-' ing fluid as set forth in the foregoin specification.

The use of my improved system results in a gain of power, since the cylinders are Working at an even and more effective tempcrature. It also prevents the excessive radiation that takes place in cold water where a non-thermostatic system is used.

I am aware that other forms of the device based upon the same general plan of operation might be provided, but I consider as my own all such modifications as fairly fall within the spirit and the scope of the ihvention.

I claim:

1. In a radiating system for internal combustion engines, the combination of an engine having a jacket, a radiator, pipes connecting the radiator and the jacket, a bypass between said pipes, a cooling liquid for circulation through said jacket'and said radiator, a valve for proportioning the flow of cooling liquid through said by-pass and said radiator, and means operated by the vapor pressure of the cool ing"liquid for controlling the movement of the valve. 7

2. In a radiating-system for internal combustion engines, the combination ofan en-' gine having a jacket, a radiator, pipes connecting the radiator and the jacket, a bypass between said pipes, a cooling liquid for circulation through said jacket and" said radiator, a pressure chamber forreceivin'g the vapors of .the'coolingfliquid, a closure for said by-pass and oneof the pipes leading to the radiator, and means operated by the vapor pressure of the cooling liquid for controlling the movement of said closures.

,3. In a radiatin system for internal combustion engines, t e combination ofan engine having a jacket, a radiator, pipes conmeeting the radiator and the jacket, a bypass between said pipes, a cooling liquid for circulation through said jacket and said open one of said closures and to close the other, and means .operatedbythe vapor pressure of the cooling liquid for controlling the movement of the rod; a

4-. In a radiatin ",system for internal com bustion engines, t e combination of an en- .ginehaving a jacket, a radiator, pipes connecting the radiator and the jacket, a

pass between said pipes, a cooling liquid for circulation through said jacket and said radiator, and means operated by the vapor pressure of the cooling ljquid for proporbustion engines, a radiator tioning the flow of cooling liquid through said lay-pass and said radiator.

5. In a radiating system for internal combustion engines, a radiator adapted to receive a coolin liquid, a jacket inclosing the cylinder of the engine, connections establishing communication between the top of the jacket and the top of the radiator, connections establishing communication between the bottom of the radiator and the jacket, a by-pass between the connections at the top and bottom of the radiator, a pump for causing a circulation of the cooling medium through the jacket, the radiator and the hy-pass and thermostatic means depend ent on the vapor pressure of the cooling medium for automatically controlling the flow of the cooling medium through the radiator and the by-pass.

6. In a radiating system for internal comadapted to receive a cooling liquidya jacket inclosing the cylinder of the engine, connections establishing communication between the top of the 'acket and the top of the radiator, connec ions establishing communication be tween the bottom of the radiator and the jacket, a bypass between the onnections at the top and bottom of the radiator, a pump for causing a circulation of the cooling medium through the jacket, the radiator and the lay-pass, thermostatic means dependent on the vapor pressure of the cooling medium for automatically controlling the flow of the cooling medium through the radiator and the bypass, said means comprising a float chamber formin part of the connection lvween the top 0 the Water jacket and the radiator and arranged to be filled with the cooling medium, a float disposed therein, and means controlled by the float for opeuing and closing the connection to the top of the radiator and the by-pass.

7. In a radiatin system for internal combustion engines, t e combination of an engine having a jacket, a radiator, a cooling liquid for circulation through said jacket and said radiator, a pipe connecting the bottom of the radiator with said jacket, a vapor pressure chamber connected with the top of said jacket, and means controlled by the vapor pressure of said fluid cooling me dium for establishing communication between said vapor prcssure chamber and the upper portion oi the radiator.

8. In a radiating system for internal com bustion engines, the combination of an engine having a jacket, a radiator, a cooling liquid for cir ulation through said jacket and said radiator, a pipe connecting the bottom of the radiator with said jacket, a vapor pressure chamber connected with the top of said jacket. means controlled by the vapor fpressure of said fluid cooling medium or establishing comn'nlnication h tween said vapor pressure chamber and the upper portion of the radiator. and a condenser normally filled with the cooling fluid and having one end in communication with said pressure chamber, the other end of the condenser being connected with the pipe which establishes communication between the pressure chamber and the jacket of the eng ne.

EUGENE A. SAYRE. Witnesses:

JOSEPH M. MANLEY, R. H. KRAMER. 

